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x in (-oo:+oo)
x-((7/2)*x^2)-32 = 0
(-7/2)*x^2+x-32 = 0
x-7/2*x^2-32 = 0
DELTA = 1^2-(-32*(-7/2)*4)
DELTA = -447
DELTA < 0
x belongs to the empty set
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